The area of Auburn River National Park is 3,900,000.0 square meters.
The area of Clyde River National Park is 10.91 square kilometers.
The area of Bellinger River National Park is 28.3 square kilometers.
The area of Mooloolah River National Park is 6,690,000.0 square meters.
The area of Abercrombie River National Park is 190 square kilometers.
The area of Moore River National Park is 172.54 square kilometers.
The area of Drysdale River National Park is 4,482.64 square kilometers.
The area of River Gambia National Park is 5,850,000.0 square meters.
The area of Fitzgerald River National Park is 2,972.11 square kilometers.
The area of Goulburn River National Park is 71 square kilometers.
Of a sorts, the Mississippi National River and Recreation Area in Minnesota is run by the National Park Service, and therefore is a National Park.
The area of Guy Fawkes River National Park is 664 square kilometers.
Voyageurs National Park Pipestone National Monument Grand Portage National Historic Site Mississippi National River and Recreation Area St. Croix National Scenic River